singer and fashion designer gwen stefani. >> i see her stuff as original. and very her. >> reporter: at her runway show this month at new york's fashion week the two trend- setters traded tips. >> look at at that. she has so much style. she has so much sophistication. on top of it she's just like unbelievable to look at. it's this whole package of like beauty. >> reporter: what wearstler wears gets plenty of attention. >> the room might have been.... >> reporter: her over-the-top clothes on the reality show top design created a huge buzz. >> all in all you did a really great job. >> reporter: you like fashion just a little bit. >> a lot. i love it. i absolutely love it. >> reporter: despite her closet being packed with the latest designer trends, there is one vintage piece she can't live without. >> this is frank. >> reporter: okay. >> frank was my grandmother's and then my mother's. and then mine. so he's about 98 years old. he used to have fur on him. he goes with me everywhere. he's my good luck charm. >> reporter: frank seems to work. celebrity clients, a place on vogue's best dress